Personal Information:

           Name:  Abdulhafid Mohammed Modabish                                                       

           Date and place of birth : December 1, 1974, Hodaidah (Yemen)                 

           Nationality: Yemeni

           Marital status: Married

           Adress: Department of Mathematics, Faculty of Science, Sana’a University

Specialization:  Applied Mathematics

Current position: Associate Professor

Summary:

I am Dr. Abdulhafid Modabish working as  Associate Professor, Department of Mathematics, Faculty of Science, Sana’a University . I have completed MSc (2007) and PhD (2012) Applied Mathematics from Faculty of Science, Mohammed V University (Rabat – Morocco). My area of interest are Discrete Mathematics and Graphs Theory. Iam having 8 years of teaching experience.

Education:

Ph. D. in  Mathematics and Computer science, Speciality : Applied Mathematics, thesis titled «Enumeration Of The Number Of Spanning Trees In Some Special Planar Maps»  Department of Mathematics and Computer Science, Faculty of Science, Mohammed V University – Agdal (Rabat – Morocco) 2012.

1997. Sc. in Mathematics and Computer science, Speciality : Applied Mathematics, thesis titled «Etude Sur La Classification Topologique Des Polynomes Complexes»  Department of Mathematics and Computer Science, Faculty of Science, Mohammed V University – Agdal (Rabat – Morocco) 2007.
1998. Sc. Mathematics and Physics, Department of Mathematics, Faculty of Education, Sana’a University  (Sana’a – Yemen) 1997.

Experience:

2013  –           : Assistant Professor in Department of Mathematics, Faculty of Science, Sana’a

University  ( Yemen)

2015  –  2016 and 2019  –

: Head of Department of Mathematics, Faculty of Science , Sana’a University Yemen.

1998 – 2004  : Mathematics teacher at high schools.

     Languages   :   Arabic, English, French

Teaching   Experience:

Undergraduate courses in Mathematics: Calculus (I, II, III), Discrete Mathematics, Algebra, Linear Algebra, Differential Equations, Probability and Statistics , Project Graduation …etc.

Research Interests:

Discrete Mathematics – Graphs Theory

Conferences and Workshops:

• Modabish, D. Lotfi and M. El Marraki, The number of spanning trees of planar maps: theory and applications. Proceedings of the International Conference on Multimedia Computing and Systems IEEE 2011, Ouarzazate-Morocco.
• Modabish and M. El Marraki, Formulas for the Number of Spanning Trees in a Kite Planar Maps,  Proceedings of the Graph & Applications, Une Journée Scientifique Graph Workshop  2011, Rabat-Morocco.
• Modabish and M. El Marraki, The number of spanning trees in some special planar maps , Proceedings of the International Workshop on Information technologies and Communication 2011 (WOTIC’11), Casablanca-Morocco.

Research and scientific papers:

• A. Modabish and M. El Marraki, Wiener index of planar maps. Journal of Theoretical and Applied Information Technology (JATIT), Vol. 18, 2010, no. 1, pp. 7 – 10.
• A. Modabish and M. El Marraki, The number of spanning trees of certain families of planar maps. Applied Mathematical Science, Vol. 5, 2011, no. 18, pp. 883 – 898.
• A. Modabish, D. Lotfi and M. El Marraki, Formulas for the Number of Spanning Trees in a Maximal Planar Map.  Applied Mathematical Science, Vol. 5, 2011, no. 64, pp. 3147 – 3159.
•  Dounia Lotfi, Mohamed El Marraki, Abdulhafid Modabish, Recursive Relation for Counting  the Complexity of Butterfly Map. Journal of Theoretical and Applied Information Technology (JATIT), Vol. 29, 2011, no. 1, pp. 43 – 46.
• A. Modabish and M. El Marraki, Counting the number of spanning trees in the star flower planar map. Applied Mathematical Science, Vol. 6, 2012, no. 49, 2411 – 2418.

•  A. Alameri, A. Modabish and A. Ayache, New Product Operation on Graphs and it’s Properties. International Mathematical Forum, Vol. 11, 2016, no. 8, 357 – 368. 
• A. Alameri, E. Ali, and A. Modabish, Zagreb Indices of Some New Graphs. J. Modern Sci. Eng. Vol. 2. No. 3 (2018) 17 –  28
• Ahmed Ayache, Abdu Alameri, Abdullatif Ghallab and Abdulhafid Modabish, Wiener polynomial and Wiener index of conical graphs. SYLWAN, 164 (3). ISI Indexed, 2020.

• Abdulhafid Modabish, Abdu Alameri, Mohammed S. Gumaan and Mohammed Alsharafi, The Second Hyper-Zagreb Index of Graph Operations.  J. Math. Comput. Sci. 11 (2021), No. 2, 1455-1469.

• Abdulhafid Modabish and Abdu Alameri, Enumeration of Spanning Trees in a Chain of Diphenylene planar Graphs.  Accepted to be Published in Applied Mathematical Sciences (2021).